British actor Daniel Radcliffe has thrown his support behind a suicide prevention group for for lesbian, gay, bisexual and transgender youths, by filming a public service announcement urging viewers to "be proud of who you are".The Harry Potter star has filmed the PSA in support of the Trevor Project, a non-profit group dedicated to crisis support and suicide prevention for youths questioning sexuality issues. Noting the group's hotline (866) 4-U-TREVOR, he adds: "If you're feeling helpless or hopeless, there's always a safe place to turn. You can talk to someone 24 hours a day."